java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:09:07,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:09:07,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:09:07,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 20:09:07,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 20:09:07,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 20:09:07,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 20:09:07,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 20:09:07,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 20:09:07,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 20:09:07,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 20:09:07,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 20:09:07,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:09:07,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:09:07,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:09:07,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:09:07,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:09:07,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:09:07,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:09:07,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:09:07,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:09:07,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:09:07,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:09:07,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:09:07,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:09:07,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:09:07,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:09:07,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:09:07,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:09:07,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:09:07,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:09:07,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:09:07,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:09:07,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:09:07,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:09:07,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:09:07,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-03 20:09:07,786 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:09:07,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:09:07,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 20:09:07,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 20:09:07,787 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 20:09:07,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:09:07,788 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:09:07,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 20:09:07,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:09:07,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:09:07,789 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 20:09:07,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:09:07,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:09:07,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:09:07,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 20:09:07,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 20:09:07,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:09:07,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:09:07,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:09:07,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 20:09:07,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 20:09:07,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:09:07,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:09:07,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 20:09:07,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:09:07,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:09:07,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:09:07,840 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:09:07,840 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:09:07,841 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-09-03 20:09:07,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f916e8d79/7c22b49c51ae47a1a010f9c8e4a8ffdc/FLAG1a91ea6f7 [2019-09-03 20:09:08,312 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:09:08,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-1.c [2019-09-03 20:09:08,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f916e8d79/7c22b49c51ae47a1a010f9c8e4a8ffdc/FLAG1a91ea6f7 [2019-09-03 20:09:08,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f916e8d79/7c22b49c51ae47a1a010f9c8e4a8ffdc [2019-09-03 20:09:08,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:09:08,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:09:08,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:09:08,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:09:08,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:09:08,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:09:08" (1/1) ... [2019-09-03 20:09:08,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8518d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:08, skipping insertion in model container [2019-09-03 20:09:08,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:09:08" (1/1) ... [2019-09-03 20:09:08,721 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:09:08,744 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:09:08,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:09:08,985 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:09:09,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:09:09,016 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:09:09,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09 WrapperNode [2019-09-03 20:09:09,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:09:09,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:09:09,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:09:09,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:09:09,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... [2019-09-03 20:09:09,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:09:09,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:09:09,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:09:09,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:09:09,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:09:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:09:09,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:09:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:09:09,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:09:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:09:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:09:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:09:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:09:09,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:09:09,426 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:09:09,426 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-03 20:09:09,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:09:09 BoogieIcfgContainer [2019-09-03 20:09:09,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:09:09,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:09:09,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:09:09,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:09:09,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:09:08" (1/3) ... [2019-09-03 20:09:09,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4b83ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:09:09, skipping insertion in model container [2019-09-03 20:09:09,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:09:09" (2/3) ... [2019-09-03 20:09:09,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4b83ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:09:09, skipping insertion in model container [2019-09-03 20:09:09,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:09:09" (3/3) ... [2019-09-03 20:09:09,436 INFO L109 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2019-09-03 20:09:09,459 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:09:09,475 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:09:09,515 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:09:09,553 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 20:09:09,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:09:09,554 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 20:09:09,554 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:09:09,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:09:09,557 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:09:09,557 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:09:09,558 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:09:09,558 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:09:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-03 20:09:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 20:09:09,605 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:09:09,606 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:09:09,608 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:09:09,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:09:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash -84144223, now seen corresponding path program 1 times [2019-09-03 20:09:09,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:09:09,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:09:09,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:09,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:09:09,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:09,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:09:09,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:09:09,750 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:09:09,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:09:09,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:09:09,762 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-09-03 20:09:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:09:09,782 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2019-09-03 20:09:09,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:09:09,783 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-09-03 20:09:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:09:09,792 INFO L225 Difference]: With dead ends: 47 [2019-09-03 20:09:09,792 INFO L226 Difference]: Without dead ends: 22 [2019-09-03 20:09:09,797 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:09:09,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-03 20:09:09,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-03 20:09:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-03 20:09:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-09-03 20:09:09,845 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2019-09-03 20:09:09,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:09:09,846 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-09-03 20:09:09,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:09:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-09-03 20:09:09,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-03 20:09:09,847 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:09:09,847 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:09:09,848 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:09:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:09:09,848 INFO L82 PathProgramCache]: Analyzing trace with hash -89685349, now seen corresponding path program 1 times [2019-09-03 20:09:09,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:09:09,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:09:09,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:09,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:09:09,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:09:10,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:09:10,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:09:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:09:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:09:10,019 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2019-09-03 20:09:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:09:10,060 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2019-09-03 20:09:10,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:09:10,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-03 20:09:10,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:09:10,063 INFO L225 Difference]: With dead ends: 48 [2019-09-03 20:09:10,064 INFO L226 Difference]: Without dead ends: 31 [2019-09-03 20:09:10,066 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:09:10,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-09-03 20:09:10,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-09-03 20:09:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-03 20:09:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-09-03 20:09:10,078 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 14 [2019-09-03 20:09:10,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:09:10,079 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-09-03 20:09:10,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:09:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-09-03 20:09:10,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-03 20:09:10,082 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:09:10,082 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:09:10,082 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:09:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:09:10,083 INFO L82 PathProgramCache]: Analyzing trace with hash 374245081, now seen corresponding path program 1 times [2019-09-03 20:09:10,083 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:09:10,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:09:10,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:09:10,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:09:10,223 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:09:10,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:09:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:10,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-03 20:09:10,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:09:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 20:09:10,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-09-03 20:09:10,316 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 20:09:10,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 20:09:10,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:09:10,317 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2019-09-03 20:09:10,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:09:10,351 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-09-03 20:09:10,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-03 20:09:10,352 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-09-03 20:09:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:09:10,353 INFO L225 Difference]: With dead ends: 51 [2019-09-03 20:09:10,353 INFO L226 Difference]: Without dead ends: 33 [2019-09-03 20:09:10,354 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-03 20:09:10,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-09-03 20:09:10,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2019-09-03 20:09:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-03 20:09:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-09-03 20:09:10,360 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2019-09-03 20:09:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:09:10,361 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-09-03 20:09:10,361 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 20:09:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-09-03 20:09:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 20:09:10,362 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:09:10,362 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:09:10,362 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:09:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:09:10,363 INFO L82 PathProgramCache]: Analyzing trace with hash -465210473, now seen corresponding path program 2 times [2019-09-03 20:09:10,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:09:10,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:09:10,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:09:10,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:10,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:09:10,455 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:09:10,472 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-03 20:09:10,504 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-03 20:09:10,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:09:10,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-03 20:09:10,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:09:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,543 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-03 20:09:10,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-09-03 20:09:10,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-03 20:09:10,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-03 20:09:10,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:09:10,546 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 6 states. [2019-09-03 20:09:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:09:10,594 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2019-09-03 20:09:10,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 20:09:10,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-03 20:09:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:09:10,596 INFO L225 Difference]: With dead ends: 55 [2019-09-03 20:09:10,596 INFO L226 Difference]: Without dead ends: 35 [2019-09-03 20:09:10,597 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-03 20:09:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-03 20:09:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2019-09-03 20:09:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-03 20:09:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-09-03 20:09:10,603 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2019-09-03 20:09:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:09:10,603 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-09-03 20:09:10,604 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-03 20:09:10,604 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-09-03 20:09:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-03 20:09:10,605 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:09:10,605 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:09:10,605 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:09:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:09:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash 271853781, now seen corresponding path program 3 times [2019-09-03 20:09:10,606 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 20:09:10,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 20:09:10,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,607 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-03 20:09:10,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:09:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:09:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:09:10,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:09:10,730 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-03 20:09:10,746 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-03 20:09:10,968 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-03 20:09:10,968 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-03 20:09:10,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-03 20:09:10,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-03 20:09:11,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:09:11,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:09:11,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:09:11,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:09:11,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-03 20:09:16,967 WARN L188 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 43 DAG size of output: 19 [2019-09-03 20:09:19,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-03 20:09:19,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:09:19,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2019-09-03 20:09:19,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-03 20:09:19,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-03 20:09:19,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2019-09-03 20:09:19,102 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 11 states. [2019-09-03 20:09:19,577 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-09-03 20:09:21,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:09:21,699 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-09-03 20:09:21,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-03 20:09:21,699 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-09-03 20:09:21,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:09:21,700 INFO L225 Difference]: With dead ends: 58 [2019-09-03 20:09:21,700 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:09:21,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2019-09-03 20:09:21,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:09:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:09:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:09:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:09:21,702 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-03 20:09:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:09:21,703 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:09:21,703 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-03 20:09:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:09:21,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:09:21,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 20:09:21,866 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-03 20:09:21,866 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:09:21,866 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 20:09:21,866 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-03 20:09:21,866 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 20:09:21,866 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 20:09:21,867 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-09-03 20:09:21,867 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2019-09-03 20:09:21,867 INFO L443 ceAbstractionStarter]: For program point L20-2(line 20) no Hoare annotation was computed. [2019-09-03 20:09:21,867 INFO L439 ceAbstractionStarter]: At program point L20-3(line 20) the Hoare annotation is: (or (and (<= main_~v~0 0) (< 0 (+ (div main_~v~0 4294967296) 1))) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-09-03 20:09:21,867 INFO L439 ceAbstractionStarter]: At program point L20-4(line 20) the Hoare annotation is: (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10)) [2019-09-03 20:09:21,867 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 22) no Hoare annotation was computed. [2019-09-03 20:09:21,868 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2019-09-03 20:09:21,868 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 10 23) no Hoare annotation was computed. [2019-09-03 20:09:21,868 INFO L443 ceAbstractionStarter]: For program point L21(lines 19 22) no Hoare annotation was computed. [2019-09-03 20:09:21,868 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 22) no Hoare annotation was computed. [2019-09-03 20:09:21,868 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2019-09-03 20:09:21,868 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-09-03 20:09:21,868 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2019-09-03 20:09:21,869 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 22) the Hoare annotation is: (or (and (<= main_~v~0 0) (<= 0 main_~v~0)) (and (<= 10 (mod main_~v~0 4294967296)) (< (mod (+ main_~v~0 4294967295) 4294967296) 10))) [2019-09-03 20:09:21,869 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 20:09:21,869 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 20:09:21,869 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 20:09:21,869 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 20:09:21,869 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 20:09:21,870 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 20:09:21,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:09:21 BoogieIcfgContainer [2019-09-03 20:09:21,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:09:21,887 INFO L168 Benchmark]: Toolchain (without parser) took 13186.62 ms. Allocated memory was 140.0 MB in the beginning and 224.4 MB in the end (delta: 84.4 MB). Free memory was 87.6 MB in the beginning and 152.0 MB in the end (delta: -64.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,888 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.82 ms. Allocated memory is still 140.0 MB. Free memory was 87.4 MB in the beginning and 78.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,890 INFO L168 Benchmark]: Boogie Preprocessor took 135.24 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 78.1 MB in the beginning and 176.7 MB in the end (delta: -98.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,891 INFO L168 Benchmark]: RCFGBuilder took 274.91 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 163.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,892 INFO L168 Benchmark]: TraceAbstraction took 12456.30 ms. Allocated memory was 199.2 MB in the beginning and 224.4 MB in the end (delta: 25.2 MB). Free memory was 163.3 MB in the beginning and 152.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:09:21,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 140.0 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.82 ms. Allocated memory is still 140.0 MB. Free memory was 87.4 MB in the beginning and 78.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.24 ms. Allocated memory was 140.0 MB in the beginning and 199.2 MB in the end (delta: 59.2 MB). Free memory was 78.1 MB in the beginning and 176.7 MB in the end (delta: -98.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.91 ms. Allocated memory is still 199.2 MB. Free memory was 176.7 MB in the beginning and 163.3 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12456.30 ms. Allocated memory was 199.2 MB in the beginning and 224.4 MB in the end (delta: 25.2 MB). Free memory was 163.3 MB in the beginning and 152.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (v <= 0 && 0 < v / 4294967296 + 1) || (v + 4294967295) % 4294967296 < 10 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (v <= 0 && 0 <= v) || (10 <= v % 4294967296 && (v + 4294967295) % 4294967296 < 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 12.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 130 SDtfs, 88 SDslu, 237 SDs, 0 SdLazy, 104 SolverSat, 22 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 16 PreInvPairs, 31 NumberOfFragments, 121 HoareAnnotationTreeSize, 16 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 136 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 2 QuantifiedInterpolants, 6262 SizeOfPredicates, 4 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 9/28 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...